Submission #1501842


Source Code Expand

//#define _GRIBCXX_DEBUG
#include <bits/stdc++.h>
# define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;

int main() {
  int n;
  cin >> n;

  int cnt;
  bool wrong;

  string s;
  rep (i, n) {
    cin >> s;
    if (s == "A") {
      cnt++;
    }
    else {
      if (cnt > 0) {
        cnt--;
      }
      else {
        wrong = true;
      }
    }
  }

  if (!wrong && cnt == 0) {
    cout << "YES" << endl;
  }
  else {
    cout << "NO" << endl;
  }

  return 0;
}

Submission Info

Submission Time
Task A - 阿吽の呼吸
User himkt
Language C++14 (GCC 5.4.1)
Score 0
Code Size 526 Byte
Status WA
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name All
Score / Max Score 0 / 100
Status
AC × 22
WA × 22
Set Name Test Cases
All 00_sample_00, 00_sample_01, 00_sample_02, 00_sample_03, 01_random_00, 01_random_01, 01_random_02, 01_random_03, 01_random_04, 01_random_05, 01_random_06, 01_random_07, 01_random_08, 01_random_09, 02_valid_00, 02_valid_01, 02_valid_02, 02_valid_03, 02_valid_04, 02_valid_05, 02_valid_06, 02_valid_07, 02_valid_08, 02_valid_09, 03_random_maximum_00, 03_random_maximum_01, 03_random_maximum_02, 03_random_maximum_03, 03_random_maximum_04, 03_random_maximum_05, 03_random_maximum_06, 03_random_maximum_07, 03_random_maximum_08, 03_random_maximum_09, 04_valid_maximum_00, 04_valid_maximum_01, 04_valid_maximum_02, 04_valid_maximum_03, 04_valid_maximum_04, 04_valid_maximum_05, 04_valid_maximum_06, 04_valid_maximum_07, 04_valid_maximum_08, 04_valid_maximum_09
Case Name Status Exec Time Memory
00_sample_00 WA 1 ms 256 KB
00_sample_01 WA 1 ms 256 KB
00_sample_02 AC 1 ms 256 KB
00_sample_03 AC 1 ms 256 KB
01_random_00 AC 1 ms 256 KB
01_random_01 AC 1 ms 256 KB
01_random_02 AC 1 ms 256 KB
01_random_03 AC 1 ms 256 KB
01_random_04 AC 1 ms 256 KB
01_random_05 AC 1 ms 256 KB
01_random_06 AC 1 ms 256 KB
01_random_07 AC 1 ms 256 KB
01_random_08 AC 1 ms 256 KB
01_random_09 AC 1 ms 256 KB
02_valid_00 WA 1 ms 256 KB
02_valid_01 WA 1 ms 256 KB
02_valid_02 WA 1 ms 256 KB
02_valid_03 WA 1 ms 256 KB
02_valid_04 WA 1 ms 256 KB
02_valid_05 WA 1 ms 256 KB
02_valid_06 WA 1 ms 256 KB
02_valid_07 WA 1 ms 256 KB
02_valid_08 WA 1 ms 256 KB
02_valid_09 WA 1 ms 256 KB
03_random_maximum_00 AC 1 ms 256 KB
03_random_maximum_01 AC 1 ms 256 KB
03_random_maximum_02 AC 1 ms 256 KB
03_random_maximum_03 AC 1 ms 256 KB
03_random_maximum_04 AC 1 ms 256 KB
03_random_maximum_05 AC 1 ms 256 KB
03_random_maximum_06 AC 1 ms 256 KB
03_random_maximum_07 AC 1 ms 256 KB
03_random_maximum_08 AC 1 ms 256 KB
03_random_maximum_09 AC 1 ms 256 KB
04_valid_maximum_00 WA 1 ms 256 KB
04_valid_maximum_01 WA 1 ms 256 KB
04_valid_maximum_02 WA 1 ms 256 KB
04_valid_maximum_03 WA 1 ms 256 KB
04_valid_maximum_04 WA 1 ms 256 KB
04_valid_maximum_05 WA 1 ms 256 KB
04_valid_maximum_06 WA 1 ms 256 KB
04_valid_maximum_07 WA 1 ms 256 KB
04_valid_maximum_08 WA 1 ms 256 KB
04_valid_maximum_09 WA 1 ms 256 KB